Re: Resume after hibernation regression in 2.6.29

In linux.kernel, you wrote:
On Thursday 26 March 2009 20:18:40 Pavel Machek wrote:
On Thu 2009-03-26 19:20:32, Tvrtko A. Ursulin wrote:
Hi guys,
I have been running custom compiled 2.6.28.7 in OpenSUSE 11.1 and using
hiberation/resume daily as configured by the distro. Yesterday I upgraded
to 2.6.29 (make oldconfig from 2.6.28.7, attached) and after resume
networking (at least) does not work. Reboot at this point takes very long
because of timeouts on CIFS and whatelse.

Below is how /var/log/messagess looks for one cycle
(hibernate-resume-reboot) and I am also attaching kernel config and
/var/log/pm-suspend.log.

You will probably notice evil nvidia.ko in there but don't panic, it all
happens without it as well. Tested from runlevel 3 and by running
pm-hibernate. After resume from that NIC LEDs were off. I
tried /etc/init.d/network restart but that hung so I ^C and tried rmmod
forcedeth && modprobe forcedeth && ifup eth0 and after some time network
went live again. Haven't had time to test further though, so this is all
pretty rough.

Ok, can you try to rmmod forcedeth before hibernation, then insmod it
after resume?

Sure, after insmod and /etc/init.d/network start following resume network was
fine. Guess I could kludge that sequence into pm scripts somehow but would
rather avoid that since it slows down the cycle and would make scripts
non-stock.


No need to modify the system pm scripts; it has support for this sort
of thing built-in. Create /etc/pm/config.d/defaults with this line:
SUSPEND_MODULES="forcedeth"

Obviously this is just a workaround until a real fix goes into the
kernel, but it should do what you need for now.

-RW
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